| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,783 | $12,207 |
| 2016 | $19,992 | $12,301 |
| 2017 | $20,254 | $13,517 |
| 2018 | $20,254 | $11,857 |
| 2019 | $21,420 | $13,250 |
| 2020 | $23,345 | $15,175 |
| 2021* | $24,690 | $16,676 |
| 2022* | $26,112 | $18,325 |
| 2023* | $27,616 | $20,137 |
| 2024* | $29,207 | $22,129 |
| 2025* | $30,889 | $24,318 |
